Qt 获取本机的IP地址、Mac地址

获取IP地址

QString getHostIpAddress()
{
    QString strIpAddress;
    QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
    // 获取第一个本主机的IPv4地址
    int nListSize = ipAddressesList.size();
    for (int i = 0; i < nListSize; ++i)
    {
           if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
               ipAddressesList.at(i).toIPv4Address()) {
               strIpAddress = ipAddressesList.at(i).toString();
               break;
           }
     }
     // 如果没有找到，则以本地IP地址为IP
     if (strIpAddress.isEmpty())
        strIpAddress = QHostAddress(QHostAddress::LocalHost).toString();
     return strIpAddress;
}

获取Mac地址

QString getHostMacAddress()
{
    QList<QNetworkInterface> nets = QNetworkInterface::allInterfaces();// 获取所有网络接口列表
    int nCnt = nets.count();
    QString strMacAddr = "";
    for(int i = 0; i < nCnt; i ++)
    {
        // 如果此网络接口被激活并且正在运行并且不是回环地址，则就是我们需要找的Mac地址
        if(nets[i].flags().testFlag(QNetworkInterface::IsUp) && nets[i].flags().testFlag(QNetworkInterface::IsRunning) && !nets[i].flags().testFlag(QNetworkInterface::IsLoopBack))
        {
            strMacAddr = nets[i].hardwareAddress();
            break;
        }
    }
    return strMacAddr;
}

需要添加头文件

#include <QNetworkInterface>
#include <QList>